Adding layer versions with Nutanix fails with error: Failed to execute the script.

App Layering only understands the Prism Elements protocol. This is the protocol used to communicate directly with Nutanix hosts and clusters. Prism Central is a management system for multiple hosts and clusters, but the ELM cannot communicate with the Prism Central server. In order to work with a Nutanix host, App Layering also requires access to the NFS share for storage containers. Make sure you have added the ELM to the Filesystem Whitelist in your Prism console.

In Nutanix 5.0, there is only Prism Elements, so there is no problem.

For Nutanix 5.5, you must configure the connector to communicate directly to a host, and nt the Prism Central server.

For Nutanix AHV 5.6 and 5.7, the host needs to unregistered from Prism Central. Nutanix 5.6 and 5.7 disables NFS access when a host or cluster is added to a Prism Central server. So you must make sure the host or cluster that App Layering will be directly communicating with is not part of Prism Central.


NFS access to the hosts was returned in AHV 5.8 so App Layering can still connect to the hosts even they are managed by Prism Central. If at all possible, we recommend upgrading to Nutanix 5.8. You must still set the Connector to communicate only with a single host or cluster, but NFS will work properly and we will be able to perform layering operations.


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7022293: Error ‘CDB: Unmap/Read sub-channel TIMEOUT_ERROR’ on Nutanix Virtual Machines

This document (7022293) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 12 Service Pack 2 (SLES 12 SP2)

SUSE Linux Enterprise Server 12 Service Pack 3 (SLES 12 SP3)


This error is observed when performing fstrim of xfs file system LUN presented by Nutanix Acropolis hypervisor (AHV):

CDB: Unmap/Read sub-channel TIMEOUT_ERROR


Fixed in:-

SUSE Linux Enterprise Server Service Pack 2: kernel-default-4.4.103-92.53.1

SUSE Linux Enterprise Server Service Pack 3: kernel-default-4.4.92-6.18.1


Unaligned SCSI unmap requests from fstrim cause disk congestion, I/O aborts and in extreme cases virtual machine hangs.


This Support Knowledgebase provides a valuable tool for NetIQ/Novell/SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented “AS IS” WITHOUT WARRANTY OF ANY KIND.


Dell EMC Expands HCI Portfolio at .NEXT

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It’s clear that organizations of all sizes are deploying hyper-converged infrastructure (HCI) in production environments for a wide range of applications these days. In a recent survey, 47 percent of survey respondents are using HCI for primary infrastructure and 45 percent are deploying mixed workloads on HCI1. The reasons for this trend are also apparent: rapid deployment, simplified management and scale-out expansion to accommodate evolving needs and new projects.

New Orleans street car and track at night

As a global IT systems company and the leading HCI solutions vendor, Dell EMC is fully committed to enhancing its portfolio to meet the growing requirements of mainstream enterprise applications. In addition, our position as the leading server vendor enables us to incorporate advanced technologies into the hardware foundation that is critical in the deployment and management of enterprise applications on hyper-converged infrastructure.

Today, in conjunction with our participation at Nutanix .NEXT, we’re announcing several recent developments with the Dell EMC XC Family based on Nutanix software, the latest Dell EMC PowerEdge servers and our integration and management software. These advancements illustrate how our server leadership and innovation are incorporated into our HCI offerings:

  • The Dell EMC XC940-24 is the first quad-processor appliance for Nutanix environments and can be configured with up to 6TB of memory, all flash or a mix of SSDs and HDDs, and 10GbE or 25GbE networking. It is purpose-built for in-memory and memory-intensive databases, big data and analytics and other applications that require extremely high levels of performance. The XC940-24 effectively expands the range of enterprise workloads that can be supported with hyper-converged infrastructure.
  • With the new Dell EMC XC640-4i appliance, we’re also expanding the lower-end of the range of applications that are a good fit for HCI. Supporting 1-, 2- and 3-node deployments, it is designed to meet the growing number of applications that are hosted outside traditional centralized data centers and cloud environments. This appliance provides a cost-effective HCI solution for non-mission critical applications in remote and branch offices, retail locations, Internet of Things (IOT) systems and other edge computing environments.
  • The new Life Cycle Management (LCM) capability for the XC Family provides another example of how our server technology and expertise are leveraged for the XC Family. LCM leverages PowerEdge technology and standards-based APIs to automatically inventory and update the BIOS and firmware for several components in an XC system. It supports both in-band and out-of-band communications and provides updates 70 percent faster than manual methods so customers can efficiently plan and execute upgrades without disrupting existing cluster operations.

Dell EMC is committed to developing the XC Family and making it the ideal platform for Nutanix. Our HCI solutions leadership is based on a unique proposition and the industry’s broadest portfolio of industry-leading technologies and solutions to address essentially any adoption model for consuming HCI. Working with customers around the world, we know there’s no single way—no silver bullet—to address every opportunity or challenge. Customers know they can turn to Dell EMC to find the solution that makes the most sense for their own unique requirements.

If you’re visiting Nutanix .NEXT in New Orleans this week, please attend our breakout session on Wednesday, May 9 at 1:25pm in Hall E2. You can also visit with technical experts and see live XC Family demos in booth P2 in the Solutions Expo. We look forward to speaking with you about why Dell EMC offers the industry’s best option for deploying Nutanix-based hyper-converged infrastructure.

  1. Topline Research, August 2017


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Dell EMC Expands Industry Leading HCI Portfolio With XC Core

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Five short years ago, Hyper-converged infrastructure (HCI) was a disruptive technology, and today it’s become a mainstream IT solution for all virtualized workloads. Customer adoption and year-over-year demand growth – estimated at 60% in 2018 – are evidence this trend is undeniably real and will continue.

As the leading HCI system sales vendor, according to IDC, Dell EMC has played a primary role in enabling and supporting this transition, and our goal is to offer a broad set of approaches that deliver the best fit for customers’ unique needs. One example of this is our XC Series, the best platform for those customers who have committed to Nutanix software.

We are continuing to expand the XC Family, and today we are announcing XC Core, a new offering that provides customers with an additional way to acquire Nutanix software licensing while leveraging the benefits of the Dell EMC XC platform. XC Core, available today, uses the same Dell EMC hardware and software as the XC Series appliances while the software is licensed and supported directly by Nutanix. This alternative lets customers buy Nutanix software licenses directly from authorized partners, and then add the licenses to pre-validated XC Core systems that are configured, built and tested by Dell EMC. It also enables license portability across infrastructure components and separate management and support of hardware and software lifecycles.

The XC Family – comprising XC Series appliances, XC Xpress appliances and now XC Core – is arguably the most complete and robust platform for customers deploying HCI with Nutanix software. Here’s why:

  1. The XC platform is based on industry-leading and proven Dell EMC PowerEdge servers that are configured and optimized for HCI and Nutanix software. These latest 14th generation PowerEdge servers were built with more than 150 custom requirements specifically for software-defined storage (SDS).
  2. PowerEdge server BIOS and firmware for the XC Family are tuned and optimized for performance to run Nutanix software.
  3. The XC platform includes Dell EMC IP that enables streamlined deployment, rapid restore to factory settings and bare metal recovery, rich in-band hardware monitoring and management, 1-click firmware and software upgrades, and workflow orchestration across a cluster.
  4. Customers can choose the Nutanix licensing and support model that is best for their needs while still leveraging the benefits of the XC platform.
  5. The XC Family comes with an ecosystem that includes reference architectures, network validation tools and integration with other Dell EMC and Microsoft technologies, including Pivotal, Avamar, Data Domain and Azure.
  6. Customers can rely on global service and support that includes support centers and teams in 167 countries, over a thousand spare parts depots around the world, and technical experts fluent in 55 languages.

Dell EMC’s HCI leadership is based on building a world class portfolio of industry-leading technologies and solutions to address essentially any adoption model for consuming HCI. Working with customers around the world, we know there’s no single way—no silver bullet—to address every opportunity or challenge. Customers know they can turn to Dell EMC to find the solution that makes the most sense for their own unique requirements.

Based on our industry leading portfolio, we’re excited to offer yet another onramp to Dell EMC and our proven technologies and support. As customers increasingly turn to HCI, we look forward to continuing to offer them the industry’s best options to simplify and transform their IT.


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Gartner Confirms Dell EMC Hyper-Converged Infrastructure Leadership

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Dell EMC is pleased to be named a leader in the first-ever Gartner Magic Quadrant (MQ) for Hyper-converged Infrastructure. Dell EMC and VMware represented Dell Technologies in the leaders quadrant, which also included industry pioneer and Dell EMC partner Nutanix. This is the 15th Magic Quadrant leaders position for Dell Technologies overall, and we believe yet another validation of the value Dell EMC uniquely brings to bear with our broad portfolio of products and services.

Dell EMC is recognized for both vision and ability to execute. VxRail, which we feel that in just 2 years has become a leading offering and is the product in the Dell EMC portfolio that best exemplifies the MQ rating, attained a 4.25 out of 5 CC product score for consolidated use cases. In addition, VxRail received the highest scores for two use cases which we believe are critical to IT Transformation – Business Critical Apps (4.26 out of 5) and Cloud (4.19 out of 5) use cases.

We acknowledge there are multiple paths to hyperconverged infrastructure (HCI) and this is one of the key reasons why we feel that we have the most expansive portfolio on the market, spanning nodes, appliances, and rack-scale systems.

Dell EMC is at the forefront of innovation, as exemplified by the latest Dell EMC HCI appliances based on Dell EMC PowerEdge 14th generation serverswhich combine the simplicity, agility and scalability of HCI appliances with the power and flexibility of next generation servers, designed and optimized for HCI. Based the latest CPUs in the Intel® Xeon® Scalable Processor series, these systems span both the Dell EMC VxRail Appliances for VMware environments as well as the Dell EMC XC Series for Nutanix-based deployments. Pre-integrated systems engineered by Dell EMC take the weight associated with constructing a working environment off the shoulders of the internal IT organization in favor of the IT vendor responsible for all the components that make up that system, including the software-defined storage (SDS) elements.

Every company is at a different point in their IT journey, and therefore there is no such thing as a one-size-fits-all solution. The good news is that Dell EMC has the breadth and depth to help IT organizations large and small drive IT and digital transformation no matter where they might be today or in the future.

To learn why Dell EMC is named a leader in the first-ever Gartner Magic Quadrant (MQ) for Hyper-converged Infrastructure, download the new Gartner Magic Quadrant for Hyperconverged Infrastructure.

*Gartner Critical Capabilities for Hyperconverged Infrastructure, Analyst(s): Philip Dawson, George J. Weiss, Kiyomi Yamada, Hiroko Aoyama, Arun Chandrasekaran, Julia Palmer, John McArthur, Published: 7 February 2018

**Gartner Magic Quadrant for Hyperconverged Infrastructure, Analyst(s): John McArthur, George J. Weiss, Kiyomi Yamada, Hiroko Aoyama, Philip Dawson, Arun Chandrasekaran, Julia Palmer, Published: 6 February 2018


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Can’t import Gold VM into App Layering, it says “The virtual machine template cannot have any attached disks.”

When you’re creating a Connector for vSphere, XenServer and Nutanix AHV, there’s an optional field for VM Template. This is not for your gold. This is so we can create temporary machines in the future for layer editing; or create permanent machines if you want to publish an Image straight to the hypervisor. Basically, any time we want to make a machine for any purpose, we’ll clone that template. Because we’ll supply our own disks after the fact, that template needs to have no disks of its own.

It’s optional, but it’s worth doing for consistency’s sake, so you might in fact clone your Gold VM (if it’s configured in the same way you expect your end-user machines will be), delete the disks from the clone, and convert that to be a template for us. Or (in vSphere) you can ignore it for now, and some day in the future, give us a template to use by editing the Connector. If you don’t specify a template in vSphere, we will create a machine when we need one with a default of 8 CPUs and 4GB – or something enormous like that.

The part where you actually import the Gold VM comes well after that. Create the Connector, specifying the VM Template if required, and close that process after you’ve saved. The next tab in the wizard back in the Management Console web page will then use that Connector to talk to your hypervisor and get a list of proper VMs (not templates), which you can use to pick the VM that you want us to import. That VM should indeed have its boot disk still attached, and should not be the Template VM you configured before.


Re: Ask The Expert: The best in hyper-converged gets even better

HI, Experts

I’m pre-sales engineer in Japan.

My main products are VxRail, vSAN Ready Nodes and XC.

14G model are very power full and easy management, I think.

Now my trouble is competition with Nutanix and HPE Simplivity.

System Manager and partner SE likes the advanced features and characteristic spec.

But VxRail and vSRN has not those feature and spec more than Nutanix/Simplivity.

How can I gain their interest?

I want to sell VxRail adn vSRN more, please let me know your idea for technical talk.



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How HCI Just Got Better and Why It Matters for Channel Partners

The hyper-converged infrastructure (HCI) market has grown rapidly in recent years, and it’s expected to get even bigger. According to 451 Research, 60% of organizations have either deployed HCI or are seriously considering it. The numbers from the IDC Converged Systems Tracker Q2 2017 confirm this rising interest among customers. The report shows that HCI systems grew by a very robust 48.5% year over year. Industry analysts are seeing this rapid expansion as indication that HCI is evolving beyond isolated use cases and entering the core data center.

This is good news for both Dell EMC and our channel partners because we will reach an HCI inflection point this fall. The #1 brand for both HCI and servers will become even stronger with the November 30 announcement of Dell EMC Hyper-converged Appliances built on PowerEdge 14th Generation servers—the next generation of servers built to optimize HCI workloads.

Dell EMC has already surpassed Nutanix as the top HCI provider, with 29% market share and a year-over-year growth rate of 149%, according to IDC. That’s triple the overall HCI growth rate! Now, with the addition of PowerEdge 14th Generation servers, Dell EMC and our partners have an even more powerful message to take to the market: We offer #1 for your data center all in one place—servers, storage, flash, converged, and now hyper-converged.

A hyper-converged infrastructure portfolio built on next generation industry-leading servers that are purpose-built for HCI to deliver the performance and reliability needed for the widest range of workloads, all with full lifecycle management from a single point of support is the fastest and easiest way to modernize infrastructure from the edge to the core to the cloud.

The takeaway for channel partners is simple: Capitalize on this HCI inflection point and help your customers build the foundation for the modern data center to drive IT transformation for their business with Dell EMC HCI appliances built on next gen PowerEdge servers.

For the latest campaign enablement materials and customer-facing content, visit the HCI Campaign Playbook.

For the latest sales materials, visit the Enablement Center for VxRail Appliances and XC Series appliances.


IDC: Dell EMC #1 in HCI–With This We’re Now #1 in Everything

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View the full infographic here

For the last several years, we at Dell EMC, like no other vendor, have been extremely passionate about modernizing IT infrastructure using converged and hyper-converged infrastructure (HCI), so it’s especially gratifying when significant validation comes our way.

This week, IDC revealed Dell EMC is, yet again, the undisputed leader of the Converged Systems market in the second quarter of 2017 with a 31.1 percent market share; nearly double that of the next highest competitor. Driving most of that growth has been our HCI platforms.

It’s also exciting to be validated by IDC that Dell EMC has also taken over the top spot in HCI sales, overtaking Nutanix. We attribute this to the continued strong growth of the Dell EMC VxRail and XC Series appliances, VxRack Systems, vSAN Ready Nodes and ScaleIO Ready Nodes business. Dell’s share of the HCI segment increased to 29 percent in the quarter, with year-over-year growth of 149 percent–that’s more than 3x the market growth.

Thanks to customers that are now pursuing a systems level approach to IT infrastructure, IDC reports that HCI platform sales grew 48.5 percent year-over-year in the second quarter, accounting for $763.4 million in sales. Collectively, that represents 24.2 percent of the total converged systems market, and HCI is clearly that fasted growing segment of the converged systems market

Driving that unprecedented amount of IT infrastructure transition are some irrefutable facts echoed by additional, leading analyst firms:

  • Enterprise Strategy Group finds that 87 percent of organizations that have implemented HCI platform say they are now more agile.
  • Wikibon reports that companies that implemented HCI platforms have reduced their total cost of ownership compared to a legacy storage area network (SAN) by 30 percent. For those organizations that prefer to stay with a rack-based system architecture, Wikibon also found that our VMware VxRack Flex systems cost half as much as a traditional SAN to acquire and provide six-times faster time to value.
  • The Evaluator Group estimates that in certain used case it is 400 percent more expensive to employ Amazon Web Services (AWS) than it is to acquire and deploy a Dell EMC VxRail appliance.

Given these types of outcomes, it’s little wonder IT organizations are moving rapidly to embrace modern platforms. In fact, 451 Research reports that 60 percent of the organizations it tracks have either implemented an HCI platform already or will do so in the next two years. The reason for this is that savvy IT organizations are on what we refer to as MAT journey that consists of three phases.

  • Modernize: HCI and converged infrastructure provide a unique capability to leverage pre-integrated systems that allows internal IT organizations to respond quickly to changing conditions because the IT environment is software-defined. Internal IT organizations can now be as agile as any cloud service provider while minimizing costs.
  • Automate: In a software-defined environment, IT organizations can automate more functions. This frees up the time needed to focus on innovative IT projects versus continually struggling to keep jerry-rigged systems up and running.
  • Transform: More automated IT services empower an IT organization to transform operational processes. An internal IT team can manage IT at unprecedented levels of scale, and the individuals managing that IT environment gain new insights and skills that can be applied more comprehensively across the IT organization.

Dell EMC is committed to helping IT organizations make that transition starting anywhere they like. For example, VxRail Appliances can be deployed starting with a single 3-node cluster and scaled out to span thousands of nodes.

Organizations that are committed to rack-based systems can opt for either VxRail or VxRack Systems that are much simpler to deploy and manage than existing legacy systems.

Whatever the path chosen, the issues IT organizations are contending with are basically all the same. Not only are they being asked to do more with less; the business wants IT to drive new application experiences within the context of a digital business transformation. That’s not going to occur if the IT department is spending all of its time trying to just keep the proverbial lights on in the data center.

There was a time when weekends were spent replacing tubes in televisions and making trips to the store to replace car parts. Now televisions are solid-state and the systems that make up a car are all automated. We’re at the point where, the IT industry is applying the same concepts to the data center itself.


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